NSC228155

NSC228155 Property

Boiling point:

627.3±65.0 °C(Predicted)

Density 

1.72±0.1 g/cm3(Predicted)

storage temp. 

2-8°C(protect from light)

solubility 

≥29 mg/mL in DMSO; insoluble in H2O; insoluble in EtOH

form 

solid

pka

-1.48±0.10(Predicted)

color 

Light yellow to orange

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

NSC228155 Chemical Properties,Usage,Production

Uses

NSC 228155 is an activator of EGFR, binds to the extracellular region of EGFR and enhance tyrosine phosphorylation of EGFR[1]. NSC 228155 is also a potent inhibitor of KIX-KID interaction, inhibits kinase-inducible domain (KID) from CREB and KID-interacting domain (KIX) from CBP, with an IC50 of 0.36 μM[2].

Biological Activity

nsc228155 is a potent inhibitor of kix-kid interaction.cyclic-amp response-element binding protein (creb) is identified as a stimulus-activated transcription factor. its transcription activity needs its binding with creb-binding protein (cbp) after creb is phosphorylated at ser133. the domains involved for creb-cbp interaction are kinase-inducible domain (kid) from creb and kid-interacting domain (kix) from cbp.

Synthesis

The reaction was carried out with 4-chloro-7-nitrobenzo[c][1,2,5]oxadiazole (NBD-Cl) and 2-mercapto-pyridine-N-oxide, mixed in a 1:1 molar ratio, and stirred at room temperature for 10 min. Formation of precipitate was observed during the reaction. Subsequently, acetone (10 mL/0.1 g raw material) was added to the reaction mixture and stirring was continued. Upon completion of the reaction, the precipitate was collected by filtration through a G3 glass filter. The precipitate was further purified by preparative thin layer chromatography (TLC) using silica gel GF254 as stationary phase and a mixture of dichloromethane and methanol (10:0.2 v/v) as mobile phase, which was repeated three times. The final product was obtained as an orange-colored solid in 46% yield with a melting point of 198-199°C (literature value 201-202°C). Analysis by electrospray ionization mass spectrometry (ESI-MS) yielded the molecular ion peak [M+H]+ m/z 291, which is consistent with the calculated value of the molecular formula C11H6N4SO4 (M=290). The results of elemental analysis were as follows: calculated values C 45.52%, H 2.08%, N 19.3%, S 11.05%; measured values C 45.45%, H 2.03%, N 19.26%, S 11.01%. NMR hydrogen spectrum (1H-NMR, DMSO-d6, δ ppm, J Hz): 8.70 (d, 1H, H-6, J=7.4), 8.44 (bd, 1H, H-13, J=6.5), 8.05 (d, 1H, H-5, J=7.4), 7.39 (td, 1H, H-12, J=6.5, 3.1), 7.27- 7.22 (m, 2H, H-10, H-11). NMR carbon spectrum (13C-NMR, DMSO-d6, δ ppm): 150.73 (C-7), 146.07 (C-9), 143.47 (C-4), 136.98 (C-3), 128.52 (C-8), 138.61 (C-13), 136.63 (C-5), 131.88 (C-6), and 125.98 (C-10 or C-11), 125.84 (C-10 or C-11), 124.32 (C-12). Fourier transform infrared spectra (FT-IR, ATR, solid, ν cm-1): 3101w, 3076m, 3039w, 1518vs, 1469m, 1422s, 1363m, 1330s, 1275m, 1250s, 1227m, 1140m, 1044w, 958w, 890m, 843w, 808w. 758m, 733w, 704w.

in vitro

previous study found that nsc228155 could dose-dependently inhibit kix–kid interaction as measured by the split rluc assay. in living hek 293t cells, nsc228155 could inhibit creb-mediated gene transcription with an ic50 of 2.09 μm. nsc228155 also inhibited vp16-creb-mediated gene transcription with an ic50 of 6.14 μm. though this was around 3-fold higher than the ic50 of creb-mediated gene transcription, such results indicated that nsc228155 was not particularly selective in inhibiting kix–kid interaction inside these living cells. therefore, although nsc228155 was a potent inhibitor of kix-kid interaction, it was not selective against creb-mediated gene transcription, and further sar studies identified a 4-aniline substituted analog displaying a higher selectivity index [1].

target

EGFR	KIX-KID 0.36 μM (IC 50 )

IC 50

0.36 μm for kix-kid interaction

References

[1] xie f, li bx, broussard c, xiao x. identification, synthesis and evaluation of substituted benzofurazans as inhibitors of creb-mediated gene transcription. bioorg med chem lett. 2013 oct 1;23(19):5371-5.